Car-brake



(No Model.)

F. S. GERRARD.

GAR BRAKE.

No. 323,507. Patented Aug. 4, 1885.

C 6 Muwg flttorney? UNITED STATES PATENT @rricn.

FRANK S. GERRARD, OF SOB-ANTON, PENNSYLVANIA.

CA R-B RAKE.

SPECIFICATION forming part of Letters Patent No. 323,507, dated August 4, 1885.

Application filed January 15, 1885. (No model.

To all whom it may concern.-

Be it known that I, FRANK S. GERRARD, a citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented a new and useful Improvement in Car-Trucks, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to railway-car trucks; and it has for its object to so construct the truck that the application of the brakes will not jar the body of the car, nor cause the truck-frames to cook up at one end, and when the train stops settle back to their places, causing the train to jam back; also, to prevent the wheels from sliding by keeping the weight equalized. The cocking of the truckframes, as now constructed, is caused by the forward brakeshoes drawing down on the lrarne and the back shoes lifting on it, in consequence of which the frame cocks up as far as its clearance in the pedestals will allow, and the action throws the most of the weight on the forward pair of wheels, reducing the weight of the back pair, allowing them to slide with less pressure from the brake-shoes than the forward pair. The rumbling disagreeable jar felt when the brakes are applied is caused by the action of the side springs of the truck being stopped by the pedestal, boxes and frame being locked together by the crowding of the brake-shoes when the brakes are applied.

In the drawings, Figure 1 is aside elevation of a car-truck with my improvement applied. Fig. 2 is a side elevation of a modification of the improvement. Figs. 3, 4, 5, 6, and 7 are also detail views of modified forms of the in1= pedestals I, thereby allowing the boxes to work as freely in the pedestals as when the brakes are not on.

In Fig. 3is illustrated the first modification, in which J designates the equalizers. H H designate a lug and box bolted to the equalizer J by a bolt, K. L designates a teat on the equalizer J to hold the equalizers fast to the boxes 0. M M designate boxes sliding on equalizers J and carrying the brake-beam. H H H H designate friction-rollers with which the brake-beam is provided, and they travel on the upper and lower faces of the equalizers. N are the brake-shoes.

Fig. 4 illustrates the second modification of the improvement, in which 0 is an extension of the equalizer O. Wis 21 box sliding on the extension 0, and carrying the brake-beam 0 P P P]? are friction-rollers, and Q is the brakeshoe.

In Fig. 5 a third modification of the cart-ruck is illustrated, and in this modification the brakebcam is hung inside of the wheel from the extension R of the equalizer.

In Fig. 6 the fourth modification of the cartruck is illustrated, wherein the brake-beam is hung inside of wheels by hangers from arms R.

In Fig. 7is illustrated the fifth modification, wherein a journal-box is cast with an arm,S, for holding brake-hangers, truss-rods S running from one box to another.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. Thecombination, with the car-truck, of the equalizers B, fitted to the boxes G, and provided with extensions c, the brake-beam D, and hangers E, substantially as specified.

2. The combination, with the car-truck, of the equalizers fitted to the bones and provided with extensions, the brake-beams, hangers, and brake-shoes, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in presence of two witnesses.

FR ANK S. GERRARD.

Witnesses:

GrIAnLns VAN VLrn'r, R. O. UHUMARD. 

